| 南瓜幼苗叶片感染白粉病菌后一些酶活性的变化 |
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| 引用本文： | 王玉,刘维信,孙令强,李敏. 南瓜幼苗叶片感染白粉病菌后一些酶活性的变化[J]. 西北农业学报, 2009, 18(4): 103-105 |
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| 作者姓名： | 王玉 刘维信 孙令强 李敏 |
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| 作者单位： | 王玉,刘维信,李敏(青岛农业大学,园林园艺学院,山东青岛,266109);孙令强(青岛市种子管理站,山东青岛,266109) |
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| 基金项目： | 山东省科技创新项目，青岛农业大学重点项目 |
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| 摘 要： | 在温室条件下研究了南瓜不同抗病品种幼苗接种瓜类白粉病后叶片内一些防御酶活性的变化.结果表明,白粉病侵染南瓜幼苗后,南瓜叶片苯丙氨酸解氨酶(PAL)、过氧化物酶(POD)和多酚氧化酶(PPOD)活性增强,中国南瓜(抗病品种)和印度南瓜(感病品种)的3种酶活性曲线均呈现两个峰值.抗病品种酶活性峰值比感病品种酶活性峰值高,增幅大.抗病品种和感病品种,随着病菌侵染的不断深入,酶活性逐渐降低.在未感染情况下,中国南瓜叶片PAL、POD和PPOD活性比感病品种高.
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| 关 键 词： | 南瓜 白粉病菌 苯丙氨酸解氨酶 过氧化物酶 多酚氧化酶 |
| 收稿时间： | 2008-11-06 |
| 修稿时间： | 2009-02-20 |
Changes of Some Enzyme Activities in Leaves of Squash Cultivars after Inoculation with Sphaerotheca fuliginea (Schlecht) Poll. |
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| WANG Yu,LIU Weixin,SUN Lingqiang and LI Min. Changes of Some Enzyme Activities in Leaves of Squash Cultivars after Inoculation with Sphaerotheca fuliginea (Schlecht) Poll.[J]. Acta Agriculturae Boreali-occidentalis Sinica, 2009, 18(4): 103-105 |
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| Authors: | WANG Yu LIU Weixin SUN Lingqiang LI Min |
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| Affiliation: | College of Landscaping and Horticulture, Qingdao Agricultural University, Qingdao Shandong 266109, China;College of Landscaping and Horticulture, Qingdao Agricultural University, Qingdao Shandong 266109, China;Department of Seed Administration, Qingdao Shandong 266109, China;College of Landscaping and Horticulture, Qingdao Agricultural University, Qingdao Shandong 266109, China |
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| Abstract: | The infection of Sphaerotheca fuliginea resulted in an increase in activities of phenylalanine ammonialyase, peroxidase and polyphenol oxidase in squash leaves.Activities of the three enzymes showed two peaks in the two tested squash cultivars.The increase of the enzyme levels in Cucurbita muschata leaves (resistant cultivar) was greater than that in C.maxima (susceptible cultivar).These results suggested that the early rapid increase of polyphenol oxidase may serve as one of the physiological indices for the selection of C.muschata. |
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| Keywords: | Squash Powdery mildew S. fuliginea Phenylalanine ammonialyase Peroxidase Polyphenol oxidase |
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